1. Department of Gynaecology and Obstetrics; Lausanne University Hospital and Faculty of Medicine; Lausanne Switzerland
2. Faculty of Medicine; University of Geneva; Geneva Switzerland
3. Department of Obstetrics and Gynaecology; Medical University Vienna; Vienna Austria
4. Department of Gynaecology and Obstetrics; Geneva University Hospitals; Geneva Switzerland
5. CRC & Division of Clinical Epidemiology; Department of Health and Community Medicine; Geneva University Hospitals; Geneva Switzerland
6. Nursing Department; Geneva University Hospitals; Geneva Switzerland
7. Department of Primary Care, Community and Emergency Medicine; Division of Emergency Medicine; Geneva University Hospitals; Geneva Switzerland